Ah yes, the wonderful aspects of blue nitrile conveyor belting. Wears less than the natural rubber, and that means more time without having to change tread, which is hard to do within five minutes.
About wheels, I must show you what our 2006 wheels look like. The design came from one of our team members.
http://www.chiefdelphi.com/media/photos/24249
With blue nitrile tread on them, they are beautiful.